From 3d99d2559d61988566e074a4bd4843f5c7ba127f Mon Sep 17 00:00:00 2001
From: "E. Almqvist" <elalmqvist@gmail.com>
Date: Wed, 27 Jan 2021 11:14:12 +0100
Subject: [PATCH] Added hex printing test

---
 src/bootloader.asm   | 5 +++++
 src/elib/convert.asm | 8 +++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/bootloader.asm b/src/bootloader.asm
index b7f282d..d23bd2b 100644
--- a/src/bootloader.asm
+++ b/src/bootloader.asm
@@ -6,6 +6,10 @@ call println
 mov bx, infoString
 call println
 
+mov dx, 0x002e ; test the conversion
+call hexToASCII
+call println
+
 jmp $  ; inf loop
 
 ;; includes
@@ -15,6 +19,7 @@ jmp $  ; inf loop
 
 ; eLIB
 %include "elib/io.asm"
+%include "elib/convert.asm"
 
 ;; Data
 welcomeString: db "Welcome to: e Operating-System (eOS)", ASCII_END
diff --git a/src/elib/convert.asm b/src/elib/convert.asm
index b54f1b4..005a89b 100644
--- a/src/elib/convert.asm
+++ b/src/elib/convert.asm
@@ -4,13 +4,15 @@ HEX_OUT: db "0x0000", ASCII_END
 ; This SR is going to mess up some registers
 ; since it fills the register with the desired 
 ; pointer toward the string.
+;
+; Disclaimer: use popa if you want to get back your registers!!!
+
 hexToASCII:
-	; pusha
 	mov cx, 0 ; incrementor
 
 	hexloop:
 		cmp cx, 4 ; check if we reached the end 
-		je return ; if so just return our new ASCII string
+		je hexreturn ; if so just return our new ASCII string
 		
 		mov ax, dx
 
@@ -36,6 +38,6 @@ hexToASCII:
 		inc cx ; increment and go onto next char
 		jmp hexloop
 
-	return:
+	hexreturn:
 		mov bx, HEX_OUT
 		ret